Information Exposure Affecting thunderbird package, versions [,152.0)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-UNMANAGED-THUNDERBIRD-17391682
- published21 Jun 2026
- disclosed16 Jun 2026
- creditUnknown
Introduced: 16 Jun 2026
CVE-2026-12303 (opens in a new tab)How to fix?
Upgrade thunderbird to version 152.0 or higher.
Overview
Affected versions of this package are vulnerable to Information Exposure in the Graphics: WebGPU component due to incorrect boundary conditions. An attacker can access sensitive information by manipulating graphics rendering operations.